Table 2.
Anatomical observations and quantifications of seed and flower morphology of different G73N genotypes from the 9425 and WT B. scoparia line
| Fitness measurement | Timing | Genotype † | ||||
|---|---|---|---|---|---|---|
| 9425‐RR | 9425‐RS | 9425‐SS | WT | ANOVA ‡ | ||
| Stamen length (mm) | Young bud | 0.88 ± 0.04 (a § ) | 0.96 ± 0.06 (a) | 0.91 ± 0.04 (a) | 0.84 ± 0.05 (a) | 0.3666 |
| Mature bud | 1.21 ± 0.06 (a) | 1.23 ± 0.05 (a) | 1.24 ± 0.04 (a) | 1.18 ± 0.07 (a) | 0.8748 | |
| Flower | 2.90 ± 0.07 (a) | 3.43 ± 0.11 (b) | 3.89 ± 0.08 (c) | 3.19 ± 0.10 (b) | <0.0001 | |
| Pistil length (mm) | Young bud | 1.63 ± 0.09 (a) | 1.57 ± 0.07 (a) | 1.84 ± 0.07 (ab) | 1.95 ± 0.16 (b) | 0.044 |
| Mature bud | 1.76 ± 0.08 (ab) | 1.60 ± 0.10 (a) | 1.97 ± 0.08 (b) | 2.08 ± 0.16 (b) | 0.0258 | |
| Flower | 2.37 ± 0.06 (b) | 2.05 ± 0.09 (a) | 2.34 ± 0.11 (ab) | 2.70 ± 0.16 (c) | 0.0013 | |
| Herkogamy (mm) | Young bud | 0.75 ± 0.06 (ab) | 0.60 ± 0.05 (a) | 0.93 ± 0.06 (bc) | 1.11 ± 0.12 (c) | 0.0003 |
| Mature bud | 0.50 ± 0.10 (ab) | 0.37 ± 0.07 (a) | 0.73 ± 0.09 (bc) | 0.90 ± 0.14 (c) | 0.0005 | |
| Flower | 0.55 ± 0.08 (a) | 1.38 ± 0.18 (b) | 1.69 ± 0.20 (b) | 0.49 ± 0.09 (a) | <0.0001 | |
| 1000 Seed weight (g) | Self | 1.01 ± 0.08 (a) | 0.96 ± 0.15 (a) | 0.98 ± 0.05 (a) | 0.84 ± 0.10 (a) | 0.6269 |
| Outcross | 1.40 ± 0.06 (a) | 0.74 ± 0.09 (bc) | 0.90 ± 0.10 (b) | 0.63 ± 0.03 (c) | <0.0001 | |
| Sepal length (mm) | Self | 0.92 ± 0.03 (a) | 0.65 ± 0.02 (b) | 0.68 ± 0.02 (b) | 0.53 ± 0.02 (c) | <0.0001 |
†
RR, RS, SS stand for homozygous‐, heterozygous‐resistant and susceptible plants (with or without the dicamba resistance endowing mutation G73N), respectively.
‡
P‐values for ANOVA for the effects of genotype on different fitness traits are listed in the far‐right column.
§
Different letters represent significant difference among the means at P = 0.05 level.